3. There is an 11mm bolt right in the center. Use socket wrench to remove bolt.

4. Remove agitator from washign machine.

5. Separate top half of agitator from bottom half (this was the most difficult part for me; unlike others who have described this repair, mine would not simply pull apart; I spent quite a while trying to pry up the white plastic clips extending from the bottom piece through the clear plastic piece that covers the "dog teeth" that make the top piece agitate)